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  1. Embed this notice
    Bernie (codewiz@mstdn.io)'s status on Wednesday, 25-Dec-2024 08:38:43 JST Bernie Bernie

    After watching several videos on #retrobrighting techniques, I started a couple of small-scale experiments to see if my setup works.

    This year's Christmas decorations will shine in UV light! 😎

    #retrocomputing #vintagecomputing

    In conversation about 5 months ago from mstdn.io permalink

    Attachments


    1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/710/406/649/933/265/original/27fea26e176482bc.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 25-Dec-2024 08:42:48 JST Bernie Bernie
      in reply to

      If you followed my A3000 restoration threads, you can easily guess which yellowed plastic I need to retrobright :amiga:
      https://mstdn.io/@codewiz/113586277421694238

      In conversation about 5 months ago permalink

      Attachments


      1. Domain not in remote thumbnail source whitelist: media.mstdn.io
        Bernie (@codewiz@mstdn.io)
        from Bernie
        Attached: 1 image I've been working for a few days to restore an Amiga 3000 from 1990 which was owned by an art professor from Philadelphia. Part 1: https://mstdn.io/@codewiz/113561527808236797 Part 2: https://mstdn.io/@codewiz/113562074864354876 TL;DR: The Varta battery leaked concentrated potassium hydroxide over the vital region between the three chips which define the Amiga architecture: Denise (video), Paula (audio) and Agnus (blitter, copper and DMA). #commodore #amiga #vintagecomputing #retrocomputing #electronics
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 25-Dec-2024 09:12:46 JST Bernie Bernie
      in reply to

      This cheap PC keyboard will go first to test the effectiveness of my #retrobrighting process.

      The very first step consists in a bath in dish soap and hot water. This should prevent grease and other dirt from blocking the UV light and the ozone.

      While I was at it, I also threw in the PCB, just to see if my soap is safe for electronics.

      Then I rinsed everything with fresh water and wiped with 70% isopropyl, which didn't seem to disturb the key engravings.

      #retrocomputing #vintagecomputing

      In conversation about 5 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/710/475/799/625/614/original/2985816acc5ed22c.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 25-Dec-2024 09:13:46 JST Bernie Bernie
      • Jason Self

      @jxself Hang on, I'm writing another of those long threads :-)

      In conversation about 5 months ago permalink
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 25-Dec-2024 09:26:10 JST Bernie Bernie
      in reply to

      Many #retrobrighting videos dip the plastic to be treated in concentrated hydrogen peroxide, or coat it with hair bleaching cream, which may contain other chemicals.

      But 12% peroxide is kinda expensive, and I couldn't find any in nearby stores. The fastest delivery I could find wouldn't arrive in time for Santa to admire my first retrobrighted keyboard.

      In conversation about 5 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/710/584/208/804/301/original/683db2d07fdd1d6c.png
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 25-Dec-2024 09:57:41 JST Bernie Bernie
      in reply to

      So I decided to try an alternative: sodium carbonate. Pure and natural since 1874... and dirt cheap at $0.10 per ounce!

      I'm no chemist. Until yesterday, I didn't even realize that washing soda isn't the same of baking soda (sodium *BI*carbonate).

      #retrobrighting #retrocomputing #chemistry

      In conversation about 5 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/710/637/181/137/046/original/447be0d463549246.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 25-Dec-2024 10:10:49 JST Bernie Bernie
      in reply to

      But I suspect what was actually needed was sodium *PER*carbonate! 😫
      https://en.wikipedia.org/wiki/Sodium_percarbonate

      Wikipedia confirms that, in water, percarbonate decomposes into hydrogen peroxide. Which is why it works the same for #retrobrighting.

      But I don't have any percarbonate at home, and it won't arrive before Dec 29 either.

      Moreover, how much would I need to get the equivalent of 12% peroxide? Now I regret not paying enough attention in #chemistry classes! ⚗️

      In conversation about 5 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/710/780/756/653/320/original/62704bdb3e2f6cff.png

    • Embed this notice
      Flight of the No Agenda ✒️ (el_jefe@noauthority.social)'s status on Wednesday, 25-Dec-2024 13:05:56 JST Flight of the No Agenda ✒️ Flight of the No Agenda ✒️
      in reply to

      @codewiz

      Brave browser

      “To prepare 100 L of 12% hydrogen peroxide solution, you would need approximately 465.5 g of sodium percarbonate.
      As for the water, you’ll need to dissolve the sodium percarbonate in it. A general rule of thumb is to use a 1:10 to 1:20 ratio of sodium percarbonate to water (w/w). Based on this, you could use:
      465.5 g sodium percarbonate + 4,655 g to 9,310 g water (approximate)
      Keep in mind that this calculation is an estimate, and the actual yield may vary…”

      In conversation about 5 months ago permalink
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 25-Dec-2024 13:05:56 JST Bernie Bernie
      in reply to
      • Flight of the No Agenda ✒️

      @El_Jefe Both ChatGPT and Copilot (aka Bing Chat?) claim that you need ~280g of percarbonate to make a single liter of 12% peroxide.

      If only we could find an expert human to check their reasoning... 🙃

      In conversation about 5 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/710/960/374/980/727/original/58411e5339263116.png

      2. https://media.mstdn.io/mstdn-media/media_attachments/files/113/710/964/472/529/285/original/1b6eccf93954dfb1.png
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 25-Dec-2024 13:15:34 JST Bernie Bernie
      • Jason Self

      @jxself I find your reasoning more persuasive than any of the LLMs that were consulted so far:
      https://mstdn.io/@codewiz/113711484285996319

      Your formula gives 369g/L, a bit more than Copilot's 275g/L and ChatGPT's 286g/L.

      But where is the mistake in their process? The calculations and the atomic weights look correct.

      In conversation about 5 months ago permalink

      Attachments

      1. Domain not in remote thumbnail source whitelist: media.mstdn.io
        Bernie (@codewiz@mstdn.io)
        from Bernie
        Attached: 2 images @El_Jefe@noauthority.social Both ChatGPT and Copilot (aka Bing Chat?) claim that you need ~280g of percarbonate to make a single liter of 12% peroxide. If only we could find an expert human to check their reasoning... 🙃
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 25-Dec-2024 14:42:41 JST Bernie Bernie
      in reply to

      Before realizing that sodium percarbonate was actually what I was supposed to use, I started a small AB-test in my UV chamber using plenty of sodium carbonate.

      After spending about 12 hours dipped in the solution, the '+' key (treatment) is visibly less yellow than the '-' key (control).

      Despite using the wrong #chemistry, my first #retrobrighting experiment didn't completely fail. Can anyone explain this surprising result?

      #retrocomputing #vintagecomputing

      In conversation about 5 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/711/817/289/028/335/original/262153778e6d4959.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 25-Dec-2024 15:23:42 JST Bernie Bernie
      • Jason Self

      @jxself And where would I get these test strips from?

      As you just saw, I'm totally clueless and confusing "sodium peroxide" with "sodium percarbonate".

      Ideally I'd just get a can of Mom's Old-Fashioned Retrobrighting Lotion (made with 10% more love than the next leading brand!)

      In conversation about 5 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/712/023/353/588/549/original/b5cda1f54a94839f.png
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 25-Dec-2024 15:31:16 JST Bernie Bernie
      in reply to
      • Dan Ports

      @dan I've already tested that sodium carbonate to rewash some yellowed kitchen and bathroom towels, but they still look the same.

      Guess I'll ask for a refund 😉

      In conversation about 5 months ago permalink
    • Embed this notice
      Dan Ports (dan@discuss.systems)'s status on Wednesday, 25-Dec-2024 15:31:17 JST Dan Ports Dan Ports
      in reply to

      @codewiz I didn't see if everyone else has already pointed this out, but you can also use sodium percarbonate for your laundry, once you have some

      In conversation about 5 months ago permalink
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Thursday, 26-Dec-2024 06:13:14 JST Bernie Bernie
      in reply to
      • Jamie Booth

      @jamie The 8-bit guy made exactly the same joke a few years ago: for some reason, he couldn't use the Ctrl key as a control in his experiment comparing various #retrobrighting methods.

      And I also couldn't, because both my Ctrl keys are visibly less yellowed than adjacent keys.

      I've seen keyboards whose space bar is more yellowed than the rest, but that's the only key having no engraving so it's plausible that it went through a different process.

      So, why Ctrl?? 🤷

      #retrocomputing

      In conversation about 5 months ago permalink

      Attachments

      1. No result found on File_thumbnail lookup.
        http://process.So/

      2. https://media.mstdn.io/mstdn-media/media_attachments/files/113/715/499/661/237/973/original/9a8679296e71fa09.jpg
    • Embed this notice
      Jamie Booth (jamie@boothcomputing.social)'s status on Thursday, 26-Dec-2024 06:13:15 JST Jamie Booth Jamie Booth
      in reply to

      @codewiz

      I think you lose points for not using the Ctrl key as the Control. 😁

      In conversation about 5 months ago permalink
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Thursday, 26-Dec-2024 13:38:17 JST Bernie Bernie
      in reply to

      I also bought a Sterilite storage box large enough for the A3000 keyboard. I believe it's made of polypropylene or polyethylene, which shouldn't block UV too much, but since my led strip is IP65, I figured I can just hang them on the inside of the lid.

      While waiting for one gallon of 12% hydrogen peroxide from Home Depot, I started another #retrobrighting experiment with concentrated sodium carbonate solution, just on a larger scale than the minus key.

      #chemistry

      In conversation about 4 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/717/201/747/270/638/original/5895adc0afa6c082.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Thursday, 26-Dec-2024 14:10:17 JST Bernie Bernie
      in reply to

      While the #chemistry is the same, the conditions are quite different:

      - I had to weight the plastic to keep it from floating: will the covered areas look different?

      - The same UV light source is being diffused in a much larger environment

      - 5W of light won't keep this larger reactor warm, so I moved my electric room heater next to it

      - This cheap box doesn't have a gasket all around the lid. Will it quickly vent out the radicals produced by peroxide decomposition in UV?

      #retrobrighting

      In conversation about 4 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/717/302/374/567/880/original/8389ad76b943bd44.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Sunday, 29-Dec-2024 02:53:29 JST Bernie Bernie
      in reply to

      My second #retrobrighting experiment with sodium carbonate for 24h ended with a slightly paler PC keyboard.

      The result is very uneven and the engravings look bleached. I'd call it a failure: don't bathe your vintage plastic in sodium carbonate!

      The two controls on the left have been kept outside the box (backspace) and inside, but suspended above the liquid (equals/plus).

      In conversation about 4 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/731/688/180/469/985/original/31ebd9e55e3ca2ec.jpg

      2. https://media.mstdn.io/mstdn-media/media_attachments/files/113/731/688/910/783/862/original/71727aaba5adc53e.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Sunday, 29-Dec-2024 03:08:26 JST Bernie Bernie
      in reply to

      Meanwhile, the 12% peroxide arrived, and I poured the entire 1 gal bottle in my #retrobrighting reactor for another 24h session with that poor PC keyboard.

      Notice the =/+ key sitting on top of a plastic weight to compare the effectiveness of the reaction in air.

      #vintagecomputing #chemistry

      In conversation about 4 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/731/735/360/158/417/original/a1be95961b5d01ef.png

      2. https://media.mstdn.io/mstdn-media/media_attachments/files/113/731/763/493/112/841/original/6229ffc1ce247489.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Sunday, 29-Dec-2024 03:24:06 JST Bernie Bernie
      in reply to

      While hydrogen peroxide (H2O2) is commonly used to disinfect wounds and even for oral rinsing, at 12% concentration it must be handled with gloves.

      I touched the wet plastic with my bare fingers, and after a few seconds they were stinging, and the skin was already partially corroded. ✌️😮

      I guess that's why you can't purchase peroxide at higher concentrations from retail stores in the US.

      #retrobrighting #chemistry

      In conversation about 4 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/731/793/394/850/065/original/24db28209d66d67b.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Sunday, 29-Dec-2024 10:04:27 JST Bernie Bernie
      in reply to
      • penguin42

      @penguin42 😲

      And how many gallons of peroxide can I buy online before they raid my house, find this weird box glowing in purple light and go: "aha! take him away!", without letting me finish to explain retrobrighting and vintage computing?

      In conversation about 4 months ago permalink
    • Embed this notice
      penguin42 (penguin42@mastodon.org.uk)'s status on Sunday, 29-Dec-2024 10:04:28 JST penguin42 penguin42
      in reply to

      @codewiz I think the other reason is it's used for making bombs.

      In conversation about 4 months ago permalink
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Sunday, 29-Dec-2024 10:12:52 JST Bernie Bernie
      in reply to
      • Perpetuum Mobile

      @rox_lukas It healed in just a couple of days, but I don't want to imagine what would would be like to dip the whole hand in my peroxide bath without rinsing it right away 😨

      In conversation about 4 months ago permalink
    • Embed this notice
      Perpetuum Mobile (rox_lukas@cmdr.social)'s status on Sunday, 29-Dec-2024 10:12:53 JST Perpetuum Mobile Perpetuum Mobile
      in reply to

      @codewiz whoa! I knew it's a potent oxidizer, but not that 12% could do THAT kind of damage. I hope it heals quickly!

      In conversation about 4 months ago permalink
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Sunday, 29-Dec-2024 10:35:56 JST Bernie Bernie
      in reply to

      The sacrificial PC keyboard turned shockingly pale after spending ~30h in my peroxide bath with UV light.

      The +/= key, which was suspended above the liquid, is almost the same shade.

      The minus and backspace keys are untreated, while the backslash key was only exposed to sunlight and then UV, but never went in with the peroxide.

      Contrary to reports that #retrobrighting weakens plastic, as far as I can tell the material remained strong and normally flexible.

      #chemistry #vintagecomputing

      In conversation about 4 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/733/459/317/661/895/original/2121b22ceb0e3986.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Sunday, 29-Dec-2024 10:58:48 JST Bernie Bernie
      in reply to

      The finalized process appears to be safe enough to start treating our venerable #Amiga 3000 keyboard.

      Apart from the space bar, the keycaps don't need #retrobrighting. A good wipe with Windex will do.

      Before proceeding, I dipped the plastic shell in dishwasher soap and warm water for 15 minutes. This should remove any grease or dirt that might block our reaction.

      #commodore #retrocomputing #vintagecomputing

      In conversation about 4 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/733/553/670/209/721/original/a1d7d9312e60a91f.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Sunday, 29-Dec-2024 12:20:41 JST Bernie Bernie
      in reply to

      As an extra precaution, I'll start off with the keyboard case suspended above the surface of the peroxide.

      The +/= key has shown the effectiveness of the alternative dry process, which is also said to yield more even results.

      I'm kinda concerned that my UV led strips might illuminate things unevenly, so I'll come check every few hours and rearrange the parts if necessary.

      #commodore #amiga #vintagecomputing #chemistry #retrobrighting

      In conversation about 4 months ago permalink
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Tuesday, 31-Dec-2024 01:52:00 JST Bernie Bernie
      • Jason Self

      @jxself I don't believe that a 12% peroxide solution could really catch fire: it's 88% plain water! Perhaps the fumes?

      In conversation about 4 months ago permalink
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 01-Jan-2025 09:55:42 JST Bernie Bernie
      • Jason Self

      @jxself 😱

      I'm getting all sorts of fun ideas for New Year celebrations in my backyard... too bad I still need the 12% peroxide for retrobrighting!

      Actually, is it safe to dispose of 1 gallon of peroxide down the drain? What if the pipes are made of copper? 😨

      I should have thought about the cleanup process *before* purchasing a highly reactive chemical...

      In conversation about 4 months ago permalink
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 01-Jan-2025 10:11:36 JST Bernie Bernie
      in reply to

      After 48h of dry #retrobrighting at room temperature, my #Amiga 3000 keyboard was still yellowish, though a paler shade than before.

      The space bar has an uneven gradient of yellow, suggesting that this air-gapped process doesn't guarantee uniform results.

      In conversation about 4 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/750/383/580/100/446/original/45ef4473afd86952.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 01-Jan-2025 10:21:28 JST Bernie Bernie
      in reply to

      Oh no! My box is too narrow to dip both halves of the keyboard shell side by side, and the peroxide level is too low to cover them together.

      I can't leave it like this if I want a uniform #retrobrighting result...

      #amiga #vintagecomputing #retrocomputing

      In conversation about 4 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/750/444/370/347/492/original/ee9136bb4e5c171c.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 01-Jan-2025 10:37:45 JST Bernie Bernie
      in reply to

      I exposed the reactor core once again to rearrange the parts.

      Now the front part is face down, fully covered by peroxide but not lit by UV. Will it still get brighter this way?

      The bottom part is still half covered, and will need to be flipped every few hours.

      I could just add tap water to rise the level, but it would also dilute the solution, and I still want to #retrobright the #Amiga 3000
      front panel and the mouse later.

      #retrocomputing #vintagecomputing #chemistry

      In conversation about 4 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/750/476/955/565/403/original/4e7033b8486939ed.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 01-Jan-2025 10:54:48 JST Bernie Bernie
      in reply to
      • Joe

      @RegGuy Good idea! I'll look for suitable items...

      In conversation about 4 months ago permalink
    • Embed this notice
      Joe (regguy@mastodon.world)'s status on Wednesday, 01-Jan-2025 10:54:49 JST Joe Joe
      in reply to

      @codewiz Put something into the solution that is neutral to raise the level. A few glasses filled with water until the solution covers both.

      In conversation about 4 months ago permalink
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Wednesday, 01-Jan-2025 12:27:32 JST Bernie Bernie
      in reply to
      • Joe

      Rising the level to cover the keyboard without diluting the peroxide wasn't hard after all. Thanks to @RegGuy for suggesting this. 💡

      While I was at it, I also poured hot water into the jars to speedup the reaction a little.

      #retrobrighting #vintagecomputing #chemistry

      In conversation about 4 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/750/925/308/940/040/original/c9e0046a0346c0c6.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Thursday, 02-Jan-2025 09:33:37 JST Bernie Bernie
      in reply to

      It's time to prepare the #Amiga 3000 front panel and the shell of the "pregnant" mouse for #retrobrighting.

      As before, soak the parts in warm water and dish soap for 15 minutes, then rinse in the shower.

      #retrocomputing #vintagecomputing

      In conversation about 4 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/755/921/661/279/479/original/0aedaa31e6f24ab1.jpg

      2. https://media.mstdn.io/mstdn-media/media_attachments/files/113/755/922/136/052/614/original/2ac77fbbb5b8f954.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Friday, 03-Jan-2025 00:19:43 JST Bernie Bernie
      in reply to
      • Andrew 🏳️‍🌈 💻 🧦

      @amca Amiga Love ❤️ https://www.youtube.com/watch?v=MyfxuIjdjfE

      In conversation about 4 months ago permalink

      Attachments

      1. Virtual Dreams & Fairlight - Love - Amiga Demo - AGA (50 FPS)
        from RetroDemoScene
        Excellent demo but worth the watch just to hear the classic music track by Jogeir. Released at South Sealand Party 1994 - Ranked: 1st...Credits:Code: Dr. Sku...
    • Embed this notice
      Andrew 🏳️‍🌈 💻 🧦 (amca@aus.social)'s status on Friday, 03-Jan-2025 00:19:44 JST Andrew 🏳️‍🌈 💻 🧦 Andrew 🏳️‍🌈 💻 🧦
      in reply to

      @codewiz Does that require having to get into the shower naked with the Amiga parts? 😉

      In conversation about 4 months ago permalink
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Friday, 03-Jan-2025 00:49:22 JST Bernie Bernie
      in reply to

      Reloading the #retrobrighting reactor core for another 24h run.

      The "control bars" keep the parts from floating around, but borosilicate glass absorbs UV, which might result in uneven results.

      #amiga #retrocomputing #vintagecomputing

      In conversation about 4 months ago permalink

      Attachments


      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/759/467/192/983/868/original/607a29ca9d6ec183.jpg
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Friday, 03-Jan-2025 01:47:42 JST Bernie Bernie
      in reply to
      • VoxelTrots

      @davet I wrapped the tank in aluminium foil, but the plastic walls will filter some of the UV.

      I wasn't sure how aluminium foil would react with peroxide. Some metals will rapidly oxidize, releasing enough heat to melt some plastics: containers:
      https://www.youtube.com/shorts/5i3guKmuBUI

      In conversation about 4 months ago permalink

      Attachments

      1. 12% hydrogen peroxide from Amazon and a rock I found.
        from Jason
        it's kind of weird how it bubbles it almost seems as if it never escapes
    • Embed this notice
      VoxelTrots (davet@mastodon.social)'s status on Friday, 03-Jan-2025 01:47:43 JST VoxelTrots VoxelTrots
      in reply to

      @codewiz I wonder if a reflective coating on the inside of the container would help provide reflections for better coverage. Aluminum foil tape or cheap mirrors maybe.

      In conversation about 4 months ago permalink
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Friday, 03-Jan-2025 06:15:15 JST Bernie Bernie
      in reply to
      • Andrew 🏳️‍🌈 💻 🧦

      @amca I kinda expected a Rick Roll, but this is almost worse 😂

      In conversation about 4 months ago permalink
    • Embed this notice
      Andrew 🏳️‍🌈 💻 🧦 (amca@aus.social)'s status on Friday, 03-Jan-2025 06:15:16 JST Andrew 🏳️‍🌈 💻 🧦 Andrew 🏳️‍🌈 💻 🧦
      in reply to

      @codewiz What is love?

      https://youtu.be/HEXWRTEbj1I?si=GXCCSqCFrMm6TEPq

      In conversation about 4 months ago permalink
    • Embed this notice
      Bernie (codewiz@mstdn.io)'s status on Saturday, 04-Jan-2025 06:10:46 JST Bernie Bernie
      in reply to

      The #Amiga 3000 front panel came out after 48h in the #retrobrighting pool. The result is uniform and the shade matches the original shade.

      As for the PC keyboard, the plastic didn't become brittle or get damaged in any visible way.

      Sadly, the #Commodore logo on the front visibly faded 😢

      Is there a way to prevent this?

      #retrocomputing #vintagecomputing

      In conversation about 4 months ago permalink

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      1. https://media.mstdn.io/mstdn-media/media_attachments/files/113/766/417/895/572/706/original/cb34cdee39a07ac1.jpg

      2. https://media.mstdn.io/mstdn-media/media_attachments/files/113/766/425/645/944/013/original/907a33643d83aa1c.jpg

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GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.

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